I would recommend that you add more skills, and that the skills are akin to ones in MOBAs. Also, there is normally at least some sort of snowball mechanic. The other things can be added later if you decide to develop it seriously.
Sounds like a good plan! I've started playing around with adding MOBA-ish skills (currently have something akin to Rammus's kit from LoL) and noticed something interesting: It seems like limited ability usage adds the most to the MOBA feel. Whether through cooldowns or 'mana', forcing the player to decide when to use their skills now appears to be a big part of the MOBA experience.
I'm still on the fence about snowballing, since blood champions (http://www.bloodlinechampions.com/) seems to have a strong MOBA vibe without it. However, perhaps that lack of snowballing is what causes so many of my experiences with that game turn into giant clusterfights; without it I guess there isn't a reason to hang back and only attack strategically.
Snowballing is not essential, but it does help it feel more like a Moba in some ways, even if it can ruin the game for some people. I would recommend that, for now, you make it so that you gain exp passively over time such that players can develop their heroes, but for now don't snowball and have equal footing. You could experiment with minor tweaks later.